Marine and Offshore construction equipment
نوع محصول :
قیمت :
-
0تومان
Marine and Offshore construction equipment - ساخت تجهیزات دریایی و فراساحل
در این فایل از معرفی انواع حرکت های کشتی در موج ، آب بالاست، انواع شناور ها تا انواع مختلف سکو ها توضیح داده شده است.
فایل pdf کیفیت عالی، زبان انگلیسی ، حجم 10 مگ
بخشی از این فایل در زیر آمده است :
The demands of the marine working environment, coupled with the demand for large-scale structures, have led to the development of a great many types of specialized and advanced construction equipment. Indeed, the response of equipment manufacturers and constructors has been rapid and effective. The
availability of construction equipment of greater capabilities has in turn played a major role in altering construction methods and in making technically feasible and economically justifiable complex structures in extremely demanding environments. These developments will continue as industrial development, principally the offshore etroleum industry, military requirements, and maritime commerce, continue their current rate of growth. The major construction equipment has been designed to work in and under the sea and hence has drawn heavily on naval architecture to ensure serviceability and stability as well as limited and predictable motion response under the prevailing marine and offshore conditions. This extension from conventional barges and ships, directed primarily for transport, to construction, drilling, and dredging operations has in turn forced the naval architectural profession to develop a methodology adaptable to a wide variety of configurations and dynamic forces. While transport hurricanes and icebreakers follow open leads in the pack ice, fixed structures must survive the full brunt of such environmental extremes. Life safety must be paramount in offshore operations. The nature of the work is inherently demanding and dangerous. The equipment must be designed not only for serviceability but also for safe operations. Marine and especially offshore equipment is very expensive: each hour has a high value in ownership or rental, plus high operating costs. Therefore, the equipment must be designed with reliability and redun- dancy. As a general rule, it should be capable of efficient operations in 70% or more of the days in the working season. Construction engineers must understand the capabilities and limitations of the equipment they use. They must be alert to detect early signs of problems before they develop to catastrophic proportions. Thus a full understanding of equipment performance is essential. In subsequent subsections of this chapter, principal generic types of marine and offshore construction equipment will be discussed